Solar flares on September 20, 2013
The most powerful solar flare in 24 hours
C3.8 (normal) flare - September 20 at 12:53 PM
Solar activity index
Value as of the end of the day on September 20, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 19, 2013 to September 20, 2013
Time zone — UTC+01 (London) — summer time
List of solar flares for September 20, 2013
The total number of solar flares of class C and higher — 5 flares
C class — 5 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 17:51 | 17:57 | 18:08 | 1850 |
| C2.3 | 13:46 | 13:51 | 14:00 | 1850 |
| C3.8 | 12:39 | 12:53 | 13:03 | 1850 |
| C2.1 | 10:56 | 11:02 | 11:08 | 1850 |
| C1.2 | 23:59 | 00:00 | 00:02 | 1850 |